What is the CVSS score of CVE-2021-31684?

CVE-2021-31684 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.3%.

Is there a public PoC exploit available for CVE-2021-31684?

Yes, a public proof-of-concept exploit is available for CVE-2021-31684. Prioritise patching immediately. EPSS: 2.3%.

Is there a patch available for CVE-2021-31684?

Yes, a patch is available for CVE-2021-31684. Update the affected software to the latest version immediately.

Json Smart V1 CVE-2021-31684

HIGH

Out-of-bounds Write (CWE-787)

2021-06-01 cve@mitre.org

Buffer Overflow Denial Of Service Memory Corruption Json Smart V1 Json Smart V2 Utilities Framework

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jun 01, 2021 - 20:15 nvd

HIGH 7.5

DescriptionNVD

A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request.

AnalysisAI

A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request. Affected products include: Json-Smart Project Json-Smart-V1, Json-Smart Project Json-Smart-V2, Oracle Utilities Framework.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).